2022 Update for the Differences Between Thermodynamic Temperature and ITS-90 Below 335 K - Cnam - Conservatoire national des arts et métiers Access content directly
Journal Articles Journal of Physical and Chemical Reference Data Year : 2022

2022 Update for the Differences Between Thermodynamic Temperature and ITS-90 Below 335 K

Roberto Gavioso
Tohru Nakano
Patrick Rourke
Richard Rusby
Peter Steur
Jintao Zhang

Abstract

In 2011, a working group of the Consultative Committee for Thermometry published their best estimates of the differences between the thermodynamic temperature T and its approximation ( T 90 ), the temperature according to the International Temperature Scale of 1990, ITS-90. These consensus estimates, in combination with measurements made in accordance with ITS-90, are an important alternative to primary thermometry for those requiring accurate measurements of thermodynamic temperature. Since 2011, there has been a change in the definition of the kelvin and significant improvements in primary thermometry. This paper updates the ( T − T 90 ) estimates by combining and analyzing the data used for the 2011 estimates and data from more recent primary thermometry. The results of the analysis are presented as a 12th-order polynomial representing the updated consensus values for the differences and a sixth-order polynomial for their uncertainty estimates.
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Dates and versions

hal-03959928 , version 1 (10-03-2023)

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Christof Gaiser, Bernd Fellmuth, Roberto Gavioso, Murat Kalemci, Vladimir Kytin, et al.. 2022 Update for the Differences Between Thermodynamic Temperature and ITS-90 Below 335 K. Journal of Physical and Chemical Reference Data, 2022, 51 (4), pp.043105. ⟨10.1063/5.0131026⟩. ⟨hal-03959928⟩
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